Hayley did the unthinkable at Sunday night's Married At First Sight commitment ceremony.
She chose to stay with her husband, David, who cleaned her soiled toilet with her own toothbrush.
She says it was for revenge.
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And someone other than her husband is FURIOUS that the bodybuilder plans to stay another week.
'The reason that I have wrote stay right, is that if he wants to do something like that to me, he can sit there for another week now and think about his actions before he goes back to his loved ones. Because I sat there thinking "what the hell have I done as a woman to get this level of utter disregard shoved in my face?"'
This didn't go down well with Stacey, whose husband, Michael, cheated on her with Hayley days earlier.
'This is a sick joke,' Stacey snapped. 'Your husband can’t stand you, you’re keeping him here in handcuffs. She’s being SPITEFUL.'
'I’m doing the same thing as he did with the toothbrush, blondey. Calm down,' Hayley snapped.
'Far out mate, you’re a walking contradiction, I feel sorry for your husband,' Stacey replied.
'Leave him alone! You’re embarrassing everyone here. No one likes you!'
Steve cut in, telling Stacey that he liked Hayley. The pair bickered back and forth until expert John intervened.
'It is toxic,' he said, before making an executive decision on behalf of Hayley and David.
'There are certain standards that we’ve got to adhere to. I think also, it’s not in the spirit of the experiment for you to be staying to get back at your partner. With that being said, we will send you back to the group and both of you now will leave the experiment regardless of the decision you’ve written on the pads.'